217978431

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{1747}}^1$

素因数の和:1979

約数の個数: 32

約数和(自身を含む): 335616000

約数和(自身を除く): 117637569

約数列:

[1, 3, 11, 19, 33, 57, 199, 209, 597, 627, 1747, 2189, 3781, 5241, 6567, 11343, 19217, 33193, 41591, 57651, 99579, 124773, 347653, 365123, 1042959, 1095369, 3824183, 6605407, 11472549, 19816221, 72659477, 217978431]

約数ペア:

[(1, 217978431), (3, 72659477), (11, 19816221), (19, 11472549), (33, 6605407), (57, 3824183), (199, 1095369), (209, 1042959), (597, 365123), (627, 347653), (1747, 124773), (2189, 99579), (3781, 57651), (5241, 41591), (6567, 33193), (11343, 19217)]